Trap for waste-pipes.



No. 716,326. Paltented Dec. l6, I902.

' .1. K. WHITE & H. w. DAUB.

V TRAP m WASTE PIPES. V (A limion filed Jan. 7, 1902,) (No-Model.)

2 Sheets-$heet I witness H WZ/Z'ei wy fiazezz a 7a Ronny Nd. 7I6,326. Patented Dec. l6, l902.

J. K. WHITE &. H. W.-DAUB.

TRAP F05 WASTE PIPES.

l (Application filed Jan. 7, 1902.) (m. Mod el 2 sheetssheet '2.

UNITE STATES JOEL K. WHITE AND HENRYilV. DAUB, OF TOPEKA', KANSAS.

TRAP FOR WASTE-PIPES.

SPECIFICATION forming part of Letters Patent No. 716,326, dated December 16, 1902. Application filed January 7, 1902. Serial No. 88,714:- (No model.)

To a whom it may concern: 1 Be it known that we, JOEL K. \VHITE and HENRY W.DAUB,citiZens of the United States, residing at Topeka, in the county of Shawnee and State of Kansas, have-invented certain new and useful Improvements in Traps for Waste-Pipes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Kitchen-sinks and like receptacles into 1 which waste water is thrown for conveyance f the invention.

to a sewer or other discharge connected with the sink or receptacle are trapped to prevent foul odors, sewer-gas, and air-currents from finding entrance into the room or place where the sink or receptacle is located. The traps are frequently choked by grease accumulat' ing therein, and it oftentimes happens that the Waste-pipe beyond the trap and the sewer becomes clogged or plugged by grease finding its way therein and accumulating upon the sides.

This invention provides a trap for completely separating the grease from the water and preventing it enteringthe sewer and the part of the waste-pipe between the trap and sewer, the grease accumulating 'in the trap and being removable therefrom at intervals.

For a full description of the invention and the merits thereof and also to acquire aknowledge of the details of construction of the means for efiecting the result reference is to be had to the following description and drawings hereto attached. I

While the essential and characteristic featuresof the invention are susceptible of modification, still the preferred embodiment of the invention isillustrated in the accompanying drawings, in which-- Figure 1 is a side View of a trap embodying Fig. 2 is a vertical central section thereof. Fig. 3 is a plan section on the line X X of Fig. 2. Fig. 4 is a side elevation of a modification. (a Fig. 5 is a vertical centralsection thereof. Fig. 6 is a plan section on the line Y Y of Fig. 5.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the sam reference characters.

The body or case 1 of the trap may be of any size, pattern, or make and constructed of lead, iron, glass, or other material best adapted for the purpose. As shown, the body or case 1 has itsupper portion tapering and closed by means of a cap 2, the main portion being octagonal in plan section. The cap 2 is removably fitted to the body or case to ad- .mit of grease and other matter being removed from the trap at stated periods or whenever found necessary to avoid choking or a stoppage of the waste Water through the trap. A vent-pipe 3 connects with the upper portion of the trap to carry off gas and foul odors. The waste-pipe 4 from the sink, basin, or other receptacle to be trapped connects with the body or case 1 intermediate of its upper and lower ends. Baffle-plates 5 and 6 are disposed in vertical and parallel relation and subdivide the body or case into spaces 7, 8, and 9. The baffle-plate 5 joins the bottom of the case, and its upper end terminates a short distance above the plane of the inlet-pipe 4. The baffle-plate 6 has its lower end spaced from the bottom of the case 1, as shown at 10, and its upper end projects above the upper end of the baffle-plate 5. These baffle-plates 5 and 6 have their vertical edges joined upon opposite sides of the case.

A n-shaped pipe has its members or legs set astraddle of the baffie-plate 5 and entering the spaces 7 and 8, the shorter leg 11 terminatingat its lower enda short distance above the bottom of the case 1 and the longer leg 12 extending either through a side of the case, as shown at 13, or through the bottom, as shown at 14, according as the dischargepipe passes through the wall or the fioor of the building. A vent-pipe 15 connects with the upper end or yoke of the fi-shaped pipe, so as to carry ofi sewer-gas or foul odors which would otherwise enter the trap from the sewer or point of discharge.

A trap constructed inacco'rdance with the invention and connected-with'a sink, basin, or other receptacle'effectually separates all grease from the water and prevents itsentrance into the sewer or dischargepipe. As

is well known, grease is of less specific gravity than water and floats upon the surface thereof. Hence when the water from the sink enters the trap through the inlet-piped an initial separation takes place, the water passing downward beneath the baflie-plate 6 and the grease rising in the space 9. The water entering the space 8 from below rises therein, and any grease contained therein is further separated, the water passing over the baiileplate 5, thence down into the space 7, and upward into the short leg 11 of the (l-shaped pipe. The Water in its passage through the space 7 has the last trace of grease removed therefrom: The grease and other buoyant matter accumulate in the upper portion of the trap and are removed therefrom at desired periods by unscrewing or lifting the cap 2. In addition to the air-vents 3 and 15 for the prevention of noxious odors and gases entering the building there is formed a water sea], this being due to constructing the (t-shaped pipe and arranging it within the case 1 so that the lower ends of both members or legs extend below a plane passing horizontally through the lower part of the inlet 4-.

Having thus described the invention, what is claimed as new is 1. In a trap for sinks and the like, a body or case, a vent-pipe connected with the upper end thereof, means for connecting the waste from the sink with the said body at a point intermediate of its upper and lower ends, haflie-plates subdividing the lower portion of the body into approximately vertical spaces, the battle-plate in proximal relation to the inlet having its lower end spaced from the bottom of the body and the next baffle-plate having its lower end joined to the said bottom and its upper end in a lower plane than the first-mentioned bafl'leplate, a fi-shaped pipe set astraddle of the last baffle-plate and having its shorter leg extended into the last space and terminating a short distance from the bottom of the body and having its longer leg extended through the body to make connection with the sewer, and a vent-pipe extended from the top of the fi-shaped pipe through the case, substantially as set forth.

2. The herein-described trap for the purposes specified, comprising a body or case, a removable cap closing the upper end thereof, a vent-pipe connected with the said cap, an inlet-pipe connected with the case at a point intermediate of its upper and lower ends, battle-plates subdividing the lower portion of the body into approximately verticalspaces, the baffle-plate adjacent to the inlet having its lower end spaced from the bottom of the case and the next bai'i'leplate having its lower end joined to said bottom and its upper end in a lower plane than the first-mentioned battle-plate, a fi-shaped pipe set astraddle of the last-mentioned ba'lile-plate and adapted to have one leg or member extended through the case and connected with the dischargepipe, and a vent-pipe connected with the upper end of the fl-shaped pipe extended out from the case, substantially as set forth.

In testimony whereof we aflix our signatures in presence of two witnesses.

JOEL K. VHITE. [L s] HENRY W. DAUB. [L. s]

Witnesses:

O'rIs E. HUNGATE, EDWIN A. AUSTIN. 

